Background image for a portion of a display screen



The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.

The FIGURE is a front view of a background image for a portion of a display screen.

The broken line showing of a portion of a display screen is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a background image for a portion of a display screen, as shown and described. 